What is the typical break distance for magnetic contacts?

The typical break distance for magnetic contacts is approximately 1.1 to 1.5 times the "make" distance. This range is significant because it defines the maximum separation at which the magnetic field will still be recognized as being “broken,” triggering the alarm system. This consideration is essential for ensuring reliable operation of security systems that utilize magnetic sensors, such as door and window contacts.

The design of magnetic contacts allows them to make a circuit when a magnetic field is present between the contact and the magnet. To ensure proper functionality, the break distance needs to be sufficiently close to the make distance, yet extended so that it accommodates environmental factors like movement or vibration. A distance within the specified range effectively balances sensitivity and tolerance, ensuring the system can accurately detect openings and closings without false alarms.

Additionally, exceeding this range may result in missed detections when the contact is an appropriate distance apart, while being too close may lead to unnecessary alarms. Thus, the structured requirement for break distance in relation to make distance supports effective intrusion detection protocols.